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The Colson Casters 4" x 1.25" Polyolefin Delrin Bearing Caster with Expanding Adapter (MTG51) is engineered for superior performance and reliability. Featuring a high-strength Polyolefin wheel and a precision Delrin bearing, this caster offers smooth and efficient mobility, ensuring effortless movement even under moderate loads. The expanding adapter, designed to fit square tubing with an inside diameter of 7/8" to 15/16", ensures easy installation across various setups.
This caster is ideal for use in a range of settings, including industrial, medical, and commercial environments, where durability and precision are paramount. The Polyolefin wheel is resistant to wear and tear, while the Delrin bearing ensures long-lasting, friction-free performance. Whether you need reliable mobility for equipment, carts, or machinery, this Colson Caster guarantees easy maneuverability and enhanced functionality.
With its versatile design and exceptional load-bearing capacity, the Colson Casters | 4" x 1.25" Polyolefin Delrin Bearing Caster offers a practical solution for your mobility needs. Enhance your operations with this durable, reliable, and easy-to-use caster that prioritizes performance and longevity.
Improve the efficiency and durability of your equipment with the Colson Casters 4" x 1.25" Polyolefin Delrin Bearing Caster. Designed to provide smooth, reliable movement, it’s the perfect addition to your operations. Trust in Colson’s commitment to quality and long-lasting performance.
Order processing
In stock. Orders placed before 12pm CT (Mon–Fri) typically ship the same or next business day from our Mansfield, TX warehouse.
Shipping method
Smaller orders ship parcel (UPS/FedEx Ground). Heavy or bulk quantities consolidate to LTL freight. The method and final cost are shown before payment, so there are no post-checkout adjustments.
Payment & procurement terms
New to CasterHQ? Open an account or request terms and send your resale or tax-exemption certificate before ordering so it is applied at checkout.
Volume pricing & quotes
Quantity discounts apply automatically — no codes needed. For large, recurring, or custom requirements, request a bulk quote and our team will confirm pricing, lead time, and total landed freight upfront.
Returns & warranty
Stock items carry a 30-day return policy in unused, resalable condition. Made-to-order and custom items are non-returnable once production starts. All products carry the manufacturer's warranty against defects.
Central & Southern U.S.: typically 1–2 business days
East & West Coasts: typically 2–3 business days
Remote areas and freight deliveries may take longer.
For pallet freight, scheduled releases, or blanket purchase orders, contact our team and we'll confirm total landed cost before you commit. Direct line: 844-439-4335.
The Colson Casters 4" x 1.25" Polyolefin Delrin Bearing Caster with Expanding Adapter is an ideal solution for applications requiring reliable, smooth, and durable mobility. Designed with a Polyolefin wheel and Delrin bearings, this caster is built to withstand the demands of various industrial, medical, and commercial settings, ensuring long-lasting performance and easy installation. Whether you’re outfitting equipment, carts, or machinery, this caster offers exceptional performance and versatility to enhance your operations.
The Colson Casters 4" Polyolefin Delrin Bearing Caster is versatile and suitable for use in a wide range of industries. Its robust construction makes it ideal for the following applications:
Choosing Colson Casters means selecting a product built for performance, durability, and ease of use. Here are some of the key benefits:
Upgrade your mobility systems with Colson Casters’ 4" Polyolefin Delrin Bearing Caster. Designed for smooth, reliable performance, this caster meets the needs of diverse industries requiring long-lasting, durable, and efficient mobility solutions. With Colson’s reputation for quality, you can trust that your investment will enhance productivity, improve safety, and provide reliable service for years to come.
This Colson MTG51 4" x 1.25" Polyolefin Caster – 7/8" to 15/16" Stem is rated to 275 lbs per caster. Size a set by dividing the total load by the number of casters, and for uneven floors assume 3 of 4 casters carry the load. Keep continuous-use loads within about 75-80% of the rating.
This caster runs a Polyolefin wheel with a 1-1/4" tread width. Polyurethane protects finished floors, rolls quietly, and resists most chemicals while carrying heavy loads.
This caster uses a top-plate mount. Measure your existing mounting holes before ordering; if you are replacing casters, match the bolt pattern - most standard patterns interchange across brands.
Rated for -20°F to 180°F. Operating outside the rated range can reduce wheel life and load capacity, so match it to your environment (wash-down, freezer, oven-adjacent, etc.).
The Polyolefin wheel performs best on smooth to semi-smooth floors including sealed concrete, tile, and epoxy. For non-marking or clean-environment needs, ask us about matching tread options.
The overall height (floor to top of plate or stem) is 5.25". Account for it when checking equipment clearance, dock height, and ergonomic working height.
We accept purchase orders and offer Net 30 on approved accounts, ACH, and all major cards, plus tax-exempt ordering with a resale or exemption certificate. Volume discounts apply automatically; request a bulk quote for large or recurring orders. Stock items carry a 30-day return policy in unused condition (made-to-order items are non-returnable once production starts).
$55.00
| Identification | |
| Brand | colson header |
| Dimensions & Mounting | |
| Wheel Diameter | 4" |
| Wheel Tread Width | 1-1/4" |
| Overall Height | 5.25" |
| Mount Style | Plate |
| Load & Performance | |
| Wheel Capacity | 275 lbs |
| Temp Range | -20°F to 180°F |
| Materials & Finish | |
| Wheel Material | Polyolefin |
| Frame Material | Zinc Plated Steel |
4" x 1.25" Polyurethane Swivel Caster – 325 lb | 2.5" x 3.625" Top Plate | CasterHQ
4" x 1-1/4" · 260 lbs
$14
Your selection is highlighted. Every option shares its wheel size and mount; a Direct fit tag means the same mounting plate — a drop-in replacement. Step up or down in load rating, all in-stock.
| Casters (in stock) | Load capacity | Wheel | Type | Overall height | Price | |
|---|---|---|---|---|---|---|
| 250 lbsLighter duty | 4" × 1-1/4"Gray Rubber | Swivel with Total Lock Brake + brake | — | $24.00 | View → | |
| 260 lbsLighter duty | 4" × 1-1/4"Polyurethane | Swivel | 4-1/8" | $14.00 | View → | |
| 275 lbs | 4" × 1-1/4"Polyolefin | — | 5.25" | $55.00 | Viewing | |
| 300 lbsHeavier duty | 4" × 1-1/4"Polyurethane | Swivel | 5-1/8" | $19.00 | View → | |
| 300 lbsHeavier duty | 4" × 1-1/4"Polyurethane | Swivel | 5-1/8" | $19.00 | View → |
